Process of reclaiming rubber.



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l' RECLAI'MINGEgijgERf 1 Pili 4elif( i for reclaimin since, besides the previously mentioned la vantages, thisv process avoids a chemical reaction of the mineral filler with the fiber-destroying agent, a reaction which almost invariably occurs by the sulfuric acid processandl which is not at'all benelicial to the finished stock.

In practice-I find it necessary to use the added materia-ls, such as starch, sugar, etc., in amount depending Wholly upon the amount of fiber present, and therefore do not nish to be limited to any specific provortiou. In general, when reclaiming ruber, I find it suiicient to use the substances in amounts of about twenty per cent. of the wcigl'it of .rubber waste, but the amount may ,be increased to one hundred per cent.l or more, 'without any serious-dctrimental re-Y sults. as one of the sugars, is used, I .find that less than 20% may be used advantageously What I claim and desire to protect by Letters Patent is:

n a process involving the disintegraof librous cellular material, treating the salue with a carbohydrate having' a non fibrous structure and capable of hydrolysis under the conditions of devulcanization, the

tion

resulting products of which decompose the fiber of saidv material into an easily pul.- verizable brittle substance.

I'na process involvingthe disintegration of fibrous cellular material, treating the same with a carbohydrate other than cellulose, whose hydrolytic products decompose the fiber of said material under the conditions of derulcanization into an easily pulverizable brittle substance.

In a process involving the disintegration of fibrous cellular material, treating the same with a-carbohydrate other than cellulose containing disaccharoses and poly saccharoses until vthe liber o f the material is decomposed into an easily pul'verizable brittle substance. i 4. In a process involving the disintegration of -ibrous cellular material, treating the `same with an organic product containing carbohydrate such as sugars until the fiber of the material is decomposed into aneasily pulverizable brittle substance.-

In a process involving the disintegra-` tionof fibrous cellular material, treating the same with a vegetable product containing carbohydrates which under the condition of waste,` the step of treating If a water-soluble carbohydrate, such starchy materials, such as 1n said Waste.

sugars and starch until thelber of the material is decomposed into easily pulverizable brittle substance.

6. In the process of reclaiming rubber waste, the step of treating such waste with devulcanizing, causes disintegration of fibrous material in said waste.

In vthe process of reclaiming rubber such waste with carbohydrates, which hydrolyze under the conditions of devulcanization and decomposethe fibrous material.

' 8. In the process of' reclaiming rubber Waste, the step of treating such waste with carbohydrates capable of producing saccharoses, which under the coluflitiou of dcvulcanizing causes dccomliositicn of fibrous matcrial in said waste.-

9. In the process ot reclaiming rubber Waste, the step of treating such waste with carbohydrates containing polysaccharoses other than cellulosewhich under the condition of devulcanizing causes' decomposition of fibrous material in said Waste.

- 10. In the process of reclaimingr rubber waste, the step o1 treating such waste withcereal grains, which under the condition of dcvulcanizin causes decomposition of the fibrous material 11. In the process of reclaiming rubber waste. the step of treating such waste with carbohydrates inthe form ot' starch, which under the condition ot devulcanizing causes decomposition ot' fibrous material .in said waste.4 12. A reclaimed .rubber compound .containing decomposition products of cellulose and vother carbohydrates ground into powder.V

13. A reclaimed rubber compound containing hydrolized and decomposed saccharoses and disintegrated cellulose ground into powder.

- 14. A reclaimed rubber compound containing hydrolized starch of cereal grains' and disintegrated cellulose.

15. A reclaimed rubber compound cow taining hydrolized starch and disintegrated cellulose.

v 10o Signed at N augatuck, Conn., this fourth day of october, 1915.

HAROLD R. MURDOCK. 

